Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 205-250-6
CAS number: 136-52-7
A robust data set is available for evaluating the toxicity of cobalt to terrestrial organisms and processes. All data met the requirements for classification as Klimisch 1 or 2 (Klimisch et al 1997). In total, 141 individual NOEC/EC10 values were compiled from the database, resulting in 14 different ‘species/process mean’ NOEC/EC10 values.
The terrestrial Co-database covers ecologically relevant endpoints. The selected endpoints are all relevant for potential effects at the population level: shoot and root yield based on weigh or length for the terrestrial plants; reproduction for the invertebrates; N- and C-transformation processes for microbial biomass.
Data are either from tests focusing on sensitive life stages (e.g. root elongation) or from “chronic exposure” (e.g. growth, reproduction). What comprises “chronic exposure” depends on the exposure duration and is also a function of the life-cycle of the test organisms. The duration should therefore be related to the typical life-cycle and to the recommended exposure duration from standard ecotoxicity protocols. For plants, exposure times of 14 to 21 days following emergence are used according to the ISO 11269-2 guideline (1995) for the shoot and root yield tests. An exposure time of 4 days was used for the root elongation tests with Hordeum vulgare according to the ISO 11269-1 (1993) guideline. The exposure time for the invertebrate tests varied between 28 days for Eisenia andrei (ISO 11268 (1996)) and Folsomia candida (ISO 11267 (1999)) and 42 days for Enchytraeus albidus (OECD 220 (2004)). Exposure times for microbial tests ranged between 1 day (Substrate induced respiration) and 28 days (maize residue mineralisation).
The reliable EC10/NOEC data were extracted from tests performed in natural and artificial soils, covering a wide range of the soil characteristics in Europe (pH value, organic matter, clay and effective cation exchange capacity (eCEC). It can be concluded that the soils covered by the toxicity data for each trophic level (plants, invertebrates and micro-organisms) properly reflect the variability in physico-chemical conditions encountered in European soils.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
Welcome to the ECHA website. This site is not fully supported in Internet Explorer 7 (and earlier versions). Please upgrade your Internet Explorer to a newer version.
Do not show this message again